Marvel Ultimate Spiderman Web Warriors Mini Backpack Your little one will be ready for any adventure with this Marvel Ultimate Spiderman preschool backpack. This backpack for toddlers features .Spiderman from Ultimate Spiderman Web Warriors Marvel Spiderman toddler backpack measures 11 inches by 9 inches by 4 inches. Just the right size for preschool children. Zip closure. Adjustable shoulder straps. Top loop for hanging. Wipe clean with damp cloth.